Flotation separation of pyrite and chalcopyrite with …
This paper used potassium permanganate (KMnO4) as a pyrite depressant to separate pyrite from chalcopyrite. Flotation and contact angle results indicated that …
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A potential ceramic ball grinding medium for optimizing flotation
The recovery of chalcopyrite and pyrite were 71.30% and 21.97%, respectively, and the CIB medium system, the recovery rates of chalcopyrite and pyrite increased from 34.87% to 50.31% and from 19.21% to 29.79%, respectively, as the pulp pH increased from 3 to 11, whereas the selectivity index increased and then decreased.
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Five Flotation Separation Methods for Chalcopyrite and Pyrite
01 Direct flotation separation process. The direct flotation separation process is mainly used to process massive copper-bearing pyrite with high sulfur content in the raw ore. First, the ore is finely ground to ensure the appropriate particle size.
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Flowsheet of the process of flotation experiments.
Flowsheet of the process of flotation experiments. Source publication. Chalcopyrite and Pyrite Floatabilities in the Presence of Sodium Sulphide and Sodium Metabisulfite in a High...
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Insights into the flotation performance of ethylenediamine …
Activation mechanism of ammonium oxalate with pyrite in the lime system and its response to flotation separation of pyrite from arsenopyrite. I. Int. J. Min. Met. Mater., 30 ... C. Zhang. A high throughput screening model of solidophilic flotation reagents for chalcopyrite based on quantum chemistry calculations and machine learning. 177 …
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Improving Flotation Separation of Mg(OH)2-Depressed Chalcopyrite …
Flotation separation of chalcopyrite/pyrite mixtures under Mg(OH)2 depression effectively limits pyrite entrainment into Cu concentrates. However, the Cu concentrate is still negatively affected by the low selectivity of depression by Mg(OH)2 and unavoidable floatability activation of pyrite by surface Cu contamination via galvanic …
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The galvanic interaction between chalcopyrite and pyrite …
Pyrite (FeS 2) is normally a gangue mineral widely associated with valuable base metal sulfide minerals such as chalcopyrite (CuFeS 2), chalcocite (Cu 2 S), galena (PbS) and sphalerite (ZnS) which are the major mineral sources for copper, lead and zinc. The economic extraction of metals requires selective separation of pyrite from these …
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Water-bridged self-assembly of low-odor xanthate …
Flotation experiments and Zeta potential measurements demonstrate that TBOEX adsorbs densely on the surface of chalcopyrite, while the rich hydroxide on the surface of pyrite hinders the self-assembly of the collector, resulting in …
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Improved flotation of chalcopyrite from galena and pyrite …
To investigate the selectivity of HDBP, the micro-flotation tests of single mineral samples were carried out. The effects of HDBP concentration on the recoveries of chalcopyrite, galena and pyrite are compared in Fig. 2 a (pulp pH = 7; [terpineol] = 2.5 × 10 −6 mol/L). Across the entire concentration range of this study (from 0 to 2 × 10 −4 …
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Heterocoagulation of chalcopyrite and pyrite minerals in flotation …
Separating chalcopyrite, an important copper-containing ore, from pyrite is an important mineral-processing objective. Herein, we report the synthesis of S-hydroxyethyl-O-isobutyl xanthate (HEIBX), a novel surfactant bearing both hydroxyl and thione groups, through the attachment of a hydroxyethyl group to sodium isobutyl …
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Selective Adsorption Mechanism of Ferric Ions on the …
When copper ores containing pyrite are crushed and ground, many unavoidable Fe3+ ions will be produced and enter the flotation process. At present, the adsorption mechanism of Fe3+ on chalcopyrite and pyrite surfaces is not clear. Here, the adsorption behaviors of Fe3+ on the surfaces of chalcopyrite and pyrite were …
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Flotation kinetics and thermodynamic behavior of chalcopyrite …
: The monomineral flotation test and microcalorimetry were used to study the flotation kinetics and thermodynamic behavior of chalcopyrite and pyrite in high alkaline systems of lime and NaOH. The results showed that in these systems there were less hydrophilic substances on the chalcopyrite surface, so that the apparent activation …
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Effect of calcium hypochlorite on flotation separation of covellite and
The effect of calcium hypochlorite (Ca(ClO) 2) on the flotation separation of covellite and pyrite with ammonium dibutyl dithiophophate (ADD) has been investigated through micro-flotation tests, zeta-potential measurements, infrared spectroscopy (IR) analyses, adsorption measurements and X-ray photoelectron (XPS) analyses.The …
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Separation of chalcopyrite and pyrite from a copper tailing …
The flotation flowsheet was shown in Fig. 1. 500 g of the sample was put into the ball mill (Wuhan Rock & Grind Equipment Manufacture Co., Ltd., Hubei, China) for different grinding times to get the optimal grinding fineness. Then the ground sample was transferred into a 1.5 L XFD series single flotation cell (Jilin Exploring Machinery Plant, …
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Flotation separation of pyrite and chalcopyrite with …
The separation of chalcopyrite and pyite is not fully solved, and thus more efficient depressants are still needed in industry. This paper used potassium permanganate (KMnO4) as a pyrite depressant to separate pyrite from chalcopyrite. Flotation and contact angle results indicated that pyrite could be depressed by KMnO4 at pH 7, while …
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Flotation separation of pyrite and chalcopyrite with …
Froth flotation is the primary method of enriching chalcopyrite. However, because the pyrite flotation can be activated by the Cu2+ in the slurry (Chandraprabha and Natarajan …
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Surface chemical and flotation behaviour of chalcopyrite and pyrite …
The adsorption isotherm of A. thiooxidans for pyrite and chalcopyrite at pH 2.5 is depicted in Fig. 3.The adsorption density increases with increase in the equilibrium number of cells up to about 2.2 × 10 11 cells/100 ml and 7 × 10 10 cells/100 ml respectively for pyrite and chalcopyrite and thereafter a plateau is reached for both the minerals.
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sbm/sbm process flow sheet for gold from chalcopyrite pyrite…
Contribute to jgw2023/sbm development by creating an account on GitHub.
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Selective Adsorption Mechanism of Ferric Ions on the …
First-principles DFT calculations and electronic structure analysis further showed that pyrite had a stronger adsorption of Fe (OH)3 than chalcopyrite. This work …
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Highly selective flotation separation of chalcopyrite and …
Microflotation results indicated that MDPE exhibited surpassing flotation selectivity for chalcopyrite against pyrite at low alkalinity (pH = 8.5) compared with traditional sodium isobutyl xanthate (SIBX) or sodium diethyldithiocarbamate (DTC).
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Flotation separation of chalcopyrite from pyrite and …
The results of flotation experiment illustrated that IBATC exhibited a stronger adsorption with chalcopyrite and could achieve to separate the chalcopyrite from the sphalerite and pyrite with pH of 9.5–10 and dosage of 30–40 mg/L.
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Xanthate interaction and flotation separation of H2O2 …
This study investigated the effects of H 2 O 2 treatment on xanthate interaction and flotation separation of chalcopyrite and pyrite by making use of a series of laboratory flotation experiments and surface analysis techniques. Flotation test results showed that H 2 O 2 treatment influenced the flotation behaviors of the two …
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The selective adsorption mechanism of calcium ions/pullulan …
Flotation is widely adopted to separate sulfide minerals from talc (Zhong et al., 2021, Farrokhpay et al., 2018, Witney and Yan, 1997).However, in the flotation beneficiation of sulfide minerals, such as chalcopyrite, talc easily enters into copper concentrate due to its natural floatability, then affecting the copper grade in concentrate.
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Dextrin as a Regulator for the Selective Flotation of Chalcopyrite
It is shown that dextrin is an effective depressant for pyrite in flotation of copper in the chalcopyrite ore at pH 8, but the pulp needs to be aereated in order to promote the surface oxidation ...
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The low-carbon flotation separation of chalcopyrite from pyrite …
With 1.0 × 10 −6 mol·L −1 PN, BN or HN, the effect of pH on the flotation recovery of chalcopyrite is shown in Fig. 2 (a), which indicates that the collecting power of the three triazine dithiol collectors to chalcopyrite was in the order of HN > BN > PN, being consistent with their carbon chain length. For BN and HN, the suitable pH values for …
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Effect of pH on flotation recovery of chalcopyrite and pyrite
Download scientific diagram | Effect of pH on flotation recovery of chalcopyrite and pyrite (c(BX)=0.1 mmol/L; ρ(LSC)=100 mg/L; ρ(2# oil)= 10 mg/L) from publication: Effect of organic depressant ...
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Froth Flotation of Chalcopyrite/Pyrite Ore: A Critical Review …
In the present work an intense bibliographic search is developed, with updated information on the microscopic fundamentals that govern the behavior of flotation operations of chalcopyrite, the main copper mineral in nature. In particular, the effect caused by the presence of pyrite, a non-valuable mineral, but challenging for the …
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Froth Flotation of Chalcopyrite/Pyrite Ore: A Critical Review
Nowadays, froth flotation of chalcopyrite ore has developed a large number of reagents that make it possible to improve the mineral's buoyancy conditions, …
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Pyrite Processing | Equipment, Process Flow, …
In addition to pyrite, the main metal minerals of copper-zinc ore include chalcopyrite, sphalerite, galena, chalcopyrite, etc. The main metal minerals of lump ore are lead-vanadium, copper-blue, limonite, …
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Flotation performance of chalcopyrite in the presence of an …
This study investigated the effect of pyrite proportion on chalcopyrite and pyrite flotation via a tri-mineral system (chalcopyrite-pyrite-quartz) with a fixed Cu head …
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Heterocoagulation of chalcopyrite and pyrite minerals in flotation …
Fig. 4 depicts an influence of pH on the ζ-potentials of the chalcopyrite and pyrite minerals.Both minerals are highly negatively charged at high pH's and have very close magnitude of the ζ-potentials, probably due to the fact that they have a similar surface layer of iron hydroxides, which can react with the base to provide negative surface charges.
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Oxidative Flotation Separation of Chalcopyrite and Pyrite …
The oxidative flotation separation of chalcopyrite from pyrite in weak alkaline seawater solution was investigated using potassium ferrate (K 2 FeO 4) as the oxidizing reagent. The optimal K 2 FeO 4 concentration of 0.25 kg/t was found to strongly depress pyrite (from 88.05% to 7.92%) but insignificantly influence chalcopyrite …
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Novel application of depressant sodium mercaptoacetate in flotation …
The effect of SMA on the flotation of chalcopyrite and pyrite was investigated in terms of pulp pH and depressant concentration, as shown in Fig. 2. It can be described from Fig. 2 (a), good floatability of chalcopyrite was achieved in entire experimental pH range without the addition of depressant SMA, and the chalcopyrite …
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Selective separation of pyrite from chalcopyrite and …
Differential flotation of pyrite–chalcopyrite–arsenopyrite mixture was carried out by interacting 1:1:1 mixture of the minerals either together or separately with cells and collector. This mixture was then transferred to the Hallimond tube and floated as described earlier. Both the floated and settled fractions were analyzed for their ...
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